Sandor danheim



(ModeL) S. DANHEIM. CUTTING MECHANISM.

Patented Mar. '21, 1882.

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' 'INYENTOR:

ATTORNEYS.

UNrTen STATES PATENT OFFICE.

'SANDOR DANHEIM, OF NEW YORK, N. Y., ASSIGNOR OF ONE-FOURTH TO JOHN s.nnnvsou,

OF SAME PLACE.

CUTTING MECHANISM."

SPECIFICATION forming part of Letters'Patent No. 25 5,l02, dated March21, 1882.

Application filed July 22, 1881.

To all whom it may concern: I

Be it known that I, SANDOR DANHEIM, of the city, county, and State ofNew York. have invented a new and Improved Cutting Mechanism, of whichthe following is a full, clear, and exact description.

The object of my invention is to provide a new and improved mechanismfor cutting paper, cloth, leather, sheet metal, 850., very rapidly andwith clean sharp edges.

The invention consists in a'handle-frame with a triangular knife at thelower end, to which frame two overlapping cutting-disks are pivoted, theframe being provided with a short pointed nose between the twodisks,trom which nose opposite shoulders extend across the frame, theout parts of the material passing over and under these shoulders.

The invention further consists in a lever loosely mounted on the journalof the upper cutting-disk and provided with a spring-pawl catching inradial recesses in the side of the upper cuttingclisk, so that thiscutting-disk can be rotated by operating the lever.

In the accompanying drawings, Figure lis a longitudinal elevation of myimproved cutting device. Fig. 2 is a cross sectional elevation of thesame on the line .r as, Fig. 1. Fig. 3 is a horizontal sectional view ofthe same on the line y y, Fig. 1.

Similar letters of reference indicate corresponding parts.

The metal frame A is provided at one end with a handle-loop, B, andatthe opposite lower end with a triangular sharp-edged knife, 0, fromthe end of which the edge of theframe is gently curved backward andupward. Two sharp-cdged eutting-disks,D and E, are mounted on thejournals D and E of the frame A and secured on thesejournals by nuts Dand E or can be pivoted to the frame in some other suitable manner.However, in all cases the cutting-disks must overlap each otherslightly, as shown, and must almost be in contact. The lower wheel ordisk,E, must not project beyond the lower edge of the frame A, so as notto deface the table upon which the material to be cut rests, and at thesame time to prevent the edge of this disk from being blunted orinjured. The frame is provided with a short nose or projection, F, thepoint of which is in line with theinner crossing of the peripheries ofthe disks (ModeL) D and E. The frame is provided with a rectangular bendextending l'rom the nose F transversely across the frame, and formingthe opposite shoulders, G and H, on opposite sides of the frame; or theframe may be provided on each side with a groove, the upper edge of onegroove and the lower edge of the opposite groove forming theabove'described shoulders. A lever, J, is loosely mounted on the journalof the disk D, and is provided with a springpawl, K, which catches innotches or recesses L in the side of the upper cutting-disk.

The operation is as follows: The instrument is seized by the handle Band pushed forward, the edge of the material that is to becutsliding uptheprojection orknife 0 upon the edge of the wheel E, and is cut by thedisks D and E. The noseF guides the mater-ialon one side of the out uponthe shoulder G, over which it passes as the instrument moves forward,and the material on the other side of the cutis guided slightly downwardto pass along the shoulder H as the instrument is moved forward. Ifthematerial tobe cut affords too much resistance to permit moving theinstrumentforward, the upper disk, D, is rotated by means of the leverJ. If this lever is raised, the end of the spring K catches in one ofthe notches L, and thus rotates the disk D, as indicated by the arrow.As soon as the lever J is released it drops by its own weight, and isthen again raised, and so on. The handle B and the lever Joan both beseized at the same time, and the instrument can be pushed forward whileoperating the lever. The cutting-disks can be surrounded by a casingprovided with slots corresponding to the shoulders Gr and H. 1

If desired, the handle and lever can be ar ranged at the opposite end ofthe instrument, so that the instrument can be drawn instead of pushed.If the cut is to begin in the middle of the piece of material, thematerial is pierced by means of the knife 0, and the cutting device isgradually introduced.

- If desired,aflexiblepower-transmitting shaft can be attached to theupper disk, D, to operate the same.

Having thus described my invention, Iclaim as new and desire to secureby Letters Patent-- 1. A frame for a cutting mechanism, constructed,substantially as herein'shown and de scribed ,with depressions orgrooves in the sides,

forming shoulders G and H, to prevent an undue spreading, bending, andbuckling of the material, as Well as prevent undue friction on theframe, as set forth.

2. In a cutting mechanism, the combination, with the frame A, providedwith shoulders G and H on the sides thereof, otthe disks D and E and theknife C at the lower end of the frame, substantially. as herein shownand described, and for the purpose set forth.

3. In a cutting mechanism, the combination, with the frame A, providedwith shoulders G and H on the sides, of the disks D and E, the knife 0at the lower end of the frame, and of the projection F, substantially asherein shown and described, and for the purpose set forth.

4. In a cutting mechanism, the combination,

with the frame A, of the cutting-disk E, the cutting disk D, providedwith notches or recesses L, the lever J, and the spring-pawl K,substantially as herein shown and described, and for the purpose setforth.

5. In aoutting mechanism, the combination, with the frame A, of thehandle B, the point C, the projection F, the cutting-disk E, thecutting-disk D, provided with notches or recesses L, the lever J, andthe spring-pawl K, substantially as herein shown and described, and forthe purpose set forth.

SANDOR DANHEIM.

Witn esses:

OSCAR F. GUNZ, C. SEDGWICK.

